java-design-patterns/intercepting-filter/index.md

layout, title, folder, permalink, categories, tags

layout	title	folder	permalink	categories	tags
pattern	Intercepting Filter	intercepting-filter	/patterns/intercepting-filter/	Behavioral	Java

Intent: Provide pluggable filters to conduct necessary pre-processing and post-processing to requests from a client to a target

Applicability: Use the Intercepting Filter pattern when

• a system uses pre-processing or post-processing requests
• a system should do the authentication/ authorization/ logging or tracking of request and then pass the requests to corresponding handlers
• you want a modular approach to configuring pre-processing and post-processing schemes

Real world examples:

• Struts 2 - Interceptors

Credits:

• TutorialsPoint - Intercepting Filter
• Presentation Tier Patterns